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Finding the Fourth Proportional to 7,069.76, 9,756.40 and 3,926.24

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Solution

The fourth proportional to 7,069.76, 9,756.40 and 3,926.24 is: 5,418.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,069.76 : 9,756.40 = 3,926.24 : x
  2. Step 2: Convert to fraction form
    7,069.76/9,756.40 = 3,926.24/x
  3. Step 3: Cross multiply
    7,069.76x = 9,756.40 × 3,926.24
  4. Step 4: Simplify right side
    7,069.76x = 38,305,967.94
  5. Step 5: Solve for x
    x = 38,305,967.94/7,069.76
  6. Step 6: Final answer
    x = 5,418.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.